The rectum is the section of the digestive tract above the anus where stool is held before it passes out Ordinarily, the rectum is empty because stool is stored higher in the descending colon. Eventually, the descending colon becomes full, and stool passes into the rectum, causing an urge to move the bowels defecate.
Adults and older children can withstand this urge until they reach a bathroom. Infants and young children lack the muscle control necessary to delay bowel movement. The anus is the opening at the far end of the digestive tract through which stool leaves the body. The anus is formed partly from the surface layers of the body, including the skin, and partly from the intestine. The anus is lined with a continuation of the external skin.
A muscular ring anal sphincter keeps the anus closed until the person has a bowel movement. See also Overview of the Digestive System Overview of the Digestive System The digestive system, which extends from the mouth to the anus, is responsible for receiving food, breaking it down into nutrients a process called digestion , absorbing the nutrients into Merck and Co. From developing new therapies that treat and prevent disease to helping people in need, we are committed to improving health and well-being around the world.
The Manual was first published in as a service to the community. Learn more about our commitment to Global Medical Knowledge. This site complies with the HONcode standard for trustworthy health information: verify here. The posterior cecal artery is located in the abdomen near the lower intestines. It branches from the ileocolic artery and may branch further to the….
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Health Conditions Discover Plan Connect. Read this next. Jejunum Overview. Masseter Medically reviewed by the Healthline Medical Network. Posterior cecal artery Medically reviewed by the Healthline Medical Network. Anterior cecal vein Medically reviewed by the Healthline Medical Network. Small intestine Medically reviewed by the Healthline Medical Network. Pancreas Medically reviewed by the Healthline Medical Network.
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